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NamedNodeMap: removeNamedItem() method - Web APIs | MDN
NamedNodeMap: removeNamedItem() method Baseline Widely available
The removeNamedItem()
method of the NamedNodeMap
interface
removes the Attr
corresponding to the given name from the map.
removeNamedItem(attrName)
attrName
The name of the attribute to remove from the map.
NotFoundError
DOMException
Thrown if there is no attribute with the given name.
<pre test="testValue"></pre>
const pre = document.querySelector("pre");
const attrMap = pre.attributes;
let result = `The 'test' attribute initially contains '${attrMap["test"].value}'.\n`;
result += "We remove it.\n\n";
attrMap.removeNamedItem("test");
result += attrMap.getNamedItem("test")
? "And 'test' still exists."
: "And 'test' is no more to be found.";
pre.textContent = result;